Form Validation with PHP
This post will show you how to create A User Input Form , that is capable to validate Inputted Value by User
Files involve
1.This sample contains 1 Files (1)trapError.php
Prior to that you need to complete the items listed Below
- Mamp or xampp with phpMyAdmin install into your Computer , check out here
- A Sample Database created Check out Here
- New User Created . Check out Here
- A New table created , check out Here
- Insert Data into the Table Here
trapError.php
<?php
$dbSuccess=false;
// Call the DB Connection PHP Script
include ("C:/xampp/htdocs/dbconnection.php");
// check Whether User Enter Email Format
function checkEmail($email) {
$find1 = strpos($email, '@');
$find2 = strpos($email, '.');
return ($find1 !== false && $find2 !== false && $find2 > $find1);
}
// Connection Successful
if ($dbSuccess) {
echo '<h4>Create User - Trap Error FORMs:</h4>';
// Check whether the User Enter All the Input Value
if (isset($_POST["firstName"]) && isset($_POST["lastName"]) && isset($_POST["yourMail"]) && isset($_POST["yourCompany"])) {
// Get the all the Form Value
$firstName = $_POST["firstName"];
$lastName = $_POST["lastName"];
$yourMail = $_POST["yourMail"];
$yourCompany = $_POST["yourCompany"];
// If Success Execute SQL querries
// declare querries
$insert_User ="INSERT INTO testtable ("."firstname ,"." lastname ,"." email ,"." companyname ". ")"."VALUES(" ."'".$firstName."',"."'".$lastName."',"."'".$yourMail."',"."'".$yourCompany."'".")";
// Check whether the User Enter a correct Email Format
if ( checkEmail($yourMail) ) {
if ($dbConnectionStatus->query($insert_User)) {
echo 'Add User Successful<br /><br />';
}
else {
echo '<span style="color:red; ">FAILED to Register.</span><br /><br />';
}
unset($firstName);
unset($lastName);
unset($yourMail);
unset($yourCompany);
}
else{
echo '<span style="color:red; ">Please Enter an Email Format.</span><br /><br />';
}
} else {
//---------------------------------------------------------------------------------
echo '<form name="postUser" action="trapError.php" method="post">';
echo '
<table>
<tr>
<td>First Name</td>
<td><input type="text" name="firstName"size="30" maxlength="10"/></td>
</tr>
<tr>
<td>Last Name</td>
<td><input type="text" name="lastName" /></td>
</tr>
<tr>
<td>Email</td>
<td><input type="text" name="yourMail" /></td>
</tr>
<tr>
<td>CompanyName</td>
<td><input type="text" name="yourCompany" /></td>
</tr>
<tr>
<td></td>
<td align="right"><input type="submit" value="Save" /></td>
</tr>
</table>
';
echo '</form>';
//----------------------------------------------------------------------------------
}
unset($firstName);
unset($lastName);
unset($yourMail);
unset($yourCompany);
echo "<br /><br />";
echo '<a href="trapError.php">
<span style="color: maroon; ">Add Another</span>
</a>';
}
?>
